1 /*
2 * Check decoding of prctl PR_GET_PDEATHSIG/PR_SET_PDEATHSIG operations.
3 *
4 * Copyright (c) 2016 JingPiao Chen <chenjingpiao@foxmail.com>
5 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "tests.h"
32 #include <asm/unistd.h>
33 #include <linux/prctl.h>
34
35 #if defined __NR_prctl && defined PR_GET_PDEATHSIG && defined PR_SET_PDEATHSIG
36
37 # include <stdio.h>
38 # include <unistd.h>
39 # include <sys/signal.h>
40
41 int
main(void)42 main(void)
43 {
44 static const kernel_ulong_t bogus_signal =
45 (kernel_ulong_t) 0xbadc0deddeadfeedULL;
46
47 int *pdeathsig = tail_alloc(sizeof(*pdeathsig));
48 long rc;
49
50 rc = syscall(__NR_prctl, PR_SET_PDEATHSIG, bogus_signal);
51 printf("prctl(PR_SET_PDEATHSIG, %llu) = %s\n",
52 (unsigned long long) bogus_signal, sprintrc(rc));
53
54 rc = syscall(__NR_prctl, PR_SET_PDEATHSIG, SIGINT);
55 printf("prctl(PR_SET_PDEATHSIG, SIGINT) = %s\n", sprintrc(rc));
56
57 rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, NULL);
58 printf("prctl(PR_GET_PDEATHSIG, NULL) = %s\n", sprintrc(rc));
59
60 rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, pdeathsig + 1);
61 printf("prctl(PR_GET_PDEATHSIG, %p) = %s\n",
62 pdeathsig + 1, sprintrc(rc));
63
64 rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, pdeathsig);
65 if (rc) {
66 printf("prctl(PR_GET_PDEATHSIG, %p) = %s\n",
67 pdeathsig, sprintrc(rc));
68 } else {
69 printf("prctl(PR_GET_PDEATHSIG, [SIGINT]) = %s\n",
70 sprintrc(rc));
71 }
72
73 puts("+++ exited with 0 +++");
74 return 0;
75 }
76
77 #else
78
79 SKIP_MAIN_UNDEFINED("__NR_prctl && PR_GET_PDEATHSIG && PR_SET_PDEATHSIG")
80
81 #endif
82